FORMAT MII (IEC 60B (Sec) 191)

A ½-inch professional format based on a metal particle tape cassette conforming to the VHS outline. The earlier M-l system, not widely used in PAL, used frequency multiplexing to accommodate luminance and chrominance components on the same tape track. M-ll uses one track for the luminance and a second track for the two time-compressed colour difference signals. The format includes two longitudinal analogue and two FM audio channels.

Signal system
Analogue, component.
Scanner
Geometry	Helical
No. of rotating heads	10 (typical)
Scanner diameter	75.9		mm
Rotation speed	25		rev/s
Tracks/revolution	4
Head-to-tape speed	5.9		m/s
Video track angle			degree
	Video	Chroma
Track width	56	36	µm
Track pitch	56	36	µm
Azimuth	+15	-15	degree
Tape Properties
Coercivity	1500		Oe
Type	Metal particle
Width	12.65		mm
Thickness (total)	14		µm
Tape Consumption
Linear	66.295		mm/s
Areal	0.05		m²/min
Shelfvolume	483		cm³/h
Electrical Characteristics
	Video	Chroma
Sync tip carrier frequ.	6.63	4.71	MHz
Blanking	7.40		MHz
Peak white	9.20	6.20	MHz
Peak positive video		7.00*	MHz
Peak negative video		5.40*	MHz
Shortest wavelength	0.64		µm

* For 100% colour bars. IEC 60B (Sec) 191

- Werbung Dezent -

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